Season 4

Kenny and Spenny compete to see who gets a boner first. They both put on speedos and throw whatever tactic they can at each other. Spenny brings his cousin Bianca in a bikini to Kenny's room and try to arouse him while Kenny tries to get Spenny so frustrated that the blood rushes to his genitals. That fails but Kenny gets an injection that stops him from getting a boner for a week.

Armed with gas masks the crew is forced to record perhaps the smelliest competition to date. Kenny, the fart-maestro, is shocked to find out that Spenny's gas-inducing diet is making him competitive. So, Kenny must dig deep to into his bag of tricks (and bowels) in order to win this methane-filled contest.

The guys each make a series of videos and must choose one to put online. The most popular video wins. Kenny, the more Internet savvy of the two, makes an eclectic series of shocking videos dealing with: 9/11, terrorists, pranks, and celebrity spoofs. Spenny, who thinks viral videos are generally idiotic, disregards his personal opinion and does everything in his power to defeat Kenny including consuming excrement

Hold on to your stomachs for an all-you-can-eat carnivorous bloat fest: whichever guy eats more meat is the winner. Kenny, a pig by definition, summons the gluttonous gods and gorges like never before, while Spenny chooses the more methodical approach of eating, exercising, resting and moving his bowels.

Wearing white body suits, the boys put themselves through numerous high-rish stain situations in an effort to stay as stain-free as possible. After a few false starts, Kenny's character is more stained than the guys' suits.

The boys are each tethered to a live goat. The first one to break the bond loses. Kenny, who wants to have fun with his goat, cleverly uses an extremely long rope in hopes that Spenny will be stuck taking care of both goats. Spenny tries his best to toilet train his goat and keep him smelling as pleasant as possible. Though it's not easy, the goat is still a better roommate than Kenny.

Whoever can take the most pain wins. Spenny, in order to get motivated, dedicates his performance to his late father, while Kenny becomes not only a competition participant but also the torturer.

Just in time for your Christmas caroling, the first one to stop singing loses in this surprisingly grueling competition. Kenny explores various musical genres while creating a fictitious and hideously slanderous version of Spenny's family tree. Spenny decides to get motivated by singing for charity, trying to raise money to buy a piano for a community center.

The guys put on 80 pound weights, and the first one to take them off loses.

Possessing a natural criminal mind, Kenny tries to break every law in the book, while Spenny tries to commit politically correct crimes and unleash his inner criminal.